package com.lex.aspect;


import com.alibaba.fastjson.JSON;
import com.lex.common.annoatation.SysLog;
import com.lex.common.enums.BusinessStatus;
import com.lex.common.factory.AsyncFactory;
import com.lex.common.factory.AsyncManager;
import com.lex.common.filter.PropertyPreExcludeFilter;
import com.lex.common.utils.IpUtil;
import com.lex.data.admin.model.LexSysLog;
import com.lex.security.util.SecurityUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ArrayUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import java.util.Collection;
import java.util.Map;

/**
 * 操作日志记录处理
 *
 * @author lex
 */
@Slf4j
@Aspect
@Component
public class LogAspect
{

    @Autowired
    HttpServletRequest request;

    /** 排除敏感属性字段 */
    public static final String[] EXCLUDE_PROPERTIES = { "password", "oldPassword", "newPassword", "confirmPassword" };

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerSysLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, SysLog controllerSysLog, Object jsonResult)
    {
        handleLog(joinPoint, controllerSysLog, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "@annotation(controllerSysLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, SysLog controllerSysLog, Exception e)
    {
        handleLog(joinPoint, controllerSysLog, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, SysLog controllerSysLog, final Exception e, Object jsonResult)
    {
        try
        {
            // 获取当前的用户
            String username = SecurityUtils.getUsername();

            // *========数据库日志=========*//
            LexSysLog operLog = new LexSysLog();
            operLog.setStatus(BusinessStatus.SUCCESS.ordinal());
            // 请求的地址
            String ip = IpUtil.getIpAddr(request);
            operLog.setOperIp(ip);
            String requestURI = request.getRequestURI();
            operLog.setOperUrl(requestURI.substring(0, Math.min(requestURI.length(), 255)));
            if (username != null)
            {
                operLog.setOperName(username);
            }

            if (e != null)
            {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                String errorMsg = e.getMessage();
                operLog.setErrorMsg(errorMsg.substring(0, Math.min(errorMsg.length(), 2000)));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 设置请求方式
            operLog.setRequestMethod(request.getMethod());
            // 处理设置注解上的参数
            getControllerMethodDescription(joinPoint, controllerSysLog, operLog, jsonResult);
            // 保存数据库
            AsyncManager.factory().execute(AsyncFactory.OperationLog(operLog));
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param sysLog 日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, SysLog sysLog, LexSysLog operLog, Object jsonResult) throws Exception
    {
        // 设置action动作
        operLog.setBusinessType(sysLog.businessType().ordinal());
        // 设置标题
        operLog.setTitle(sysLog.title());
        // 设置操作人类别
        operLog.setOperatorType(sysLog.operatorType().ordinal());
        // 是否需要保存request，参数和值
        if (sysLog.isSaveRequestData())
        {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(joinPoint, operLog, sysLog.excludeParamNames());
        }
        // 是否需要保存response，参数和值
        if (sysLog.isSaveResponseData() && jsonResult != null)
        {
            String result = JSON.toJSONString(jsonResult);
            operLog.setJsonResult(result.substring(0, Math.min(result.length(), 2000)));
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     * @throws Exception 异常
     */
    private void setRequestValue(JoinPoint joinPoint, LexSysLog operLog, String[] excludeParamNames) throws Exception
    {
        //获取request中的参数
        Map<String, String[]> map = request.getParameterMap();
        String requestMethod = operLog.getRequestMethod();
        if ((map == null || map.isEmpty())
                && (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)))
        {
            String params = argsArrayToString(joinPoint.getArgs(), excludeParamNames);
            operLog.setOperParam(params.substring(0, Math.min(params.length(), 2000)));
        }
        else
        {
            String params = JSON.toJSONString(map, excludePropertyPreFilter(excludeParamNames));
            operLog.setOperParam(params.substring(0, Math.min(params.length(), 2000)));
        }

    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray, String[] excludeParamNames)
    {
        String params = "";
        if (paramsArray != null && paramsArray.length > 0)
        {
            for (Object o : paramsArray)
            {
                if (o != null && !isFilterObject(o))
                {
                    try
                    {
                        String jsonObj = JSON.toJSONString(o, excludePropertyPreFilter(excludeParamNames));
                        params += jsonObj.toString() + " ";
                    }
                    catch (Exception e)
                    {
                    }
                }
            }
        }
        return params.trim();
    }

    /**
     * 忽略敏感属性
     */
    public PropertyPreExcludeFilter excludePropertyPreFilter(String[] excludeParamNames)
    {
        return new PropertyPreExcludeFilter().addExcludes(ArrayUtils.addAll(EXCLUDE_PROPERTIES, excludeParamNames));
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o)
    {
        Class<?> clazz = o.getClass();
        if (clazz.isArray())
        {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        }
        else if (Collection.class.isAssignableFrom(clazz))
        {
            Collection collection = (Collection) o;
            for (Object value : collection)
            {
                return value instanceof MultipartFile;
            }
        }
        else if (Map.class.isAssignableFrom(clazz))
        {
            Map map = (Map) o;
            for (Object value : map.entrySet())
            {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }
}
